10142451421 has 4 divisors (see below), whose sum is σ = 10171183932. Its totient is φ = 10113718912.

The previous prime is 10142451377. The next prime is 10142451437. The reversal of 10142451421 is 12415424101.

10142451421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12415424101 = 1399 ⋅8874499.

It can be written as a sum of positive squares in 2 ways, for example, as 1858903225 + 8283548196 = 43115^2 + 91014^2 .

It is a cyclic number.

It is not a de Polignac number, because 10142451421 - 2⁹ = 10142450909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10142451721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14365726 + ... + 14366431.

It is an arithmetic number, because the mean of its divisors is an integer number (2542795983).

Almost surely, 2^10142451421 is an apocalyptic number.

It is an amenable number.

10142451421 is a deficient number, since it is larger than the sum of its proper divisors (28732511).

10142451421 is an equidigital number, since it uses as much as digits as its factorization.

10142451421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28732510.

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 10142451421 its reverse (12415424101), we get a palindrome (22557875522).

The spelling of 10142451421 in words is "ten billion, one hundred forty-two million, four hundred fifty-one thousand, four hundred twenty-one".